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112-589 - BILLET 90mm LS Throttle Body w/low RPM Taper - default Image
112-589 - BILLET 90mm LS Throttle Body w/low RPM Taper - additional Image
112-589 - BILLET 90mm LS Throttle Body w/low RPM Taper - additional Image
112-589 - BILLET 90mm LS Throttle Body w/low RPM Taper - additional Image
112-589 - BILLET 90mm LS Throttle Body w/low RPM Taper - additional Image
112-589 - BILLET 90mm LS Throttle Body w/low RPM Taper - additional Image
Holley EFI Billet LS 90, 95 & 105mm Throttle BodiesYouTube Button

BILLET 90mm LS Throttle Body w/low RPM Taper

LS 90mm TB w/cable drive and taper

PART# 112-589

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Overview

Holley's BILLET LS Throttle Bodies are the MOST FEATURE LOADED available. Holley went back to the drawing board and built the ultimate air valve for your LS engine! The 112-589 throttle body features a 90 millimeter bore and a low RPM drive friendly taper. Innovative features like Idle Bleed Adjustment, TPS CLOCKER, and closable PCV Passage Valve, make them the ultimate throttle bodies for ease of installation and tuning. Regardless of whether you have a stock LS engine, turbo, supercharger, or a big cam engine sucking gulps of air, Holley's throttle bodies are maximized for your application. The barrier protection of the BLACK ANODIZED finish also offers up a modern tech look!

Features:

  • TPS CLOCKER allows the TPS to be rotated back into the ECU's required idle voltage range. Modified engines no longer suffer from problems related to TPS voltage!
  • IDLE BLEED allows adjustment of your idle without affecting throttle position or TPS voltages at idle!
  • PCV PASSAGE VALVE closes to accommodate forced induction applications! No more plugging to block off PCV!
  • TAPERED TRANSITION eliminates low RPM drivability issues
  • PREMIUM BILLET BODY supports the high tolerance design and look your performance engine deserves!
  • BLACK ANODIZED FINISH for superior corrosion resistance and serious good looks
  • CRUISE CONTROL provision built in for cruise control cable
  • CABLE DRIVEN APPLICATION
  • MOUNTING HARDWARE and gasket included
  • Fits the following intake manifolds: Stock LS2, Stock LS3, Stock LS7, Holley LS Mid-Rise, Holley 95mm Hi-Ram, Fast™ LSX, Edelbrock Pro-Flo XT using 4 bolt TBs & Most other 90 through 95mm LS intakes using 4 bolt TBs

Specs

Billet ColorBlack
BrandHolley EFI
Emission Code4
MaterialBillet Aluminum
Product TypeBillet 90mm LS Throttle Body
Throttle Bore90mm
Part Number112-589

Emissions

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Tech Resources

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